612166601 has 2 divisors, whose sum is σ = 612166602. Its totient is φ = 612166600.

The previous prime is 612166571. The next prime is 612166637. The reversal of 612166601 is 106661216.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 568870201 + 43296400 = 23851^2 + 6580^2 .

It is a cyclic number.

It is not a de Polignac number, because 612166601 - 2¹⁰ = 612165577 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is equal to p_31926431 and since 612166601 and 31926431 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (612166691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306083300 + 306083301.

It is an arithmetic number, because the mean of its divisors is an integer number (306083301).

Almost surely, 2^612166601 is an apocalyptic number.

It is an amenable number.

612166601 is a deficient number, since it is larger than the sum of its proper divisors (1).

612166601 is an equidigital number, since it uses as much as digits as its factorization.

612166601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 612166601 is about 24742.0007477164. Note that the first 3 decimals coincide. The cubic root of 612166601 is about 849.0955089156.

The spelling of 612166601 in words is "six hundred twelve million, one hundred sixty-six thousand, six hundred one".